New Features for Version 2.7.2.0

Dial modifiers X, W, and (,) are now supported where the following is true.

Table 1 Dial Modifiers for Cisco MICA Modems

Dial Modifier

Definition

X

Switch to in-band DTMF mode for any subsequent digits remaining in the ATD string. The X dial modifier has been added to serve as a delimiter for the host when processing the dial string. Allows Cisco MICA portware to be used in many environments that do not support DTMF dialing (for example, PRI).

W

Wait for dial tone then switch to in-band DTMF mode for any subsequent digits remaining in the ATD string. The W dial modifier also acts as a delimiter between the primary and secondary sections of the dial string, so no additional X modifier is needed. Once either an X or a W has been parsed in the dial string, any additional X modifiers are ignored. Additional W modifiers cause Cisco MICA to wait for a dial tone.

,

Delay: Number of seconds in S8. Default is 2 seconds. The (,) dial modifier is treated as a silent DTMF tone for the duration of seconds specified in S8. The (,) is only acted upon after the call switching module (CSM) has been transitioned into DTMF mode which requires that it either follow an X or a W in the dial string or that the T1/E1 is configured for DTMF signaling.

The W and (,) modifiers work similarly to those used in a standalone analog modem.

In the following example dial string, the portion of the string before the X is dialed for the given line type used in your configuration. All digits after the X generate the appropriate DTMF tones:

atdt5551234x,,567

For more information about the X, W, and (,) dial modifiers, refer to the Cisco MICA Modem Dial Modifiers for Cisco AS5300, Cisco AS5400, and AS5800 Universal Access Servers document.

Existing Features for Version 2.7.2.0

The following features continue to be supported with Cisco IOS Release 12.1(5)T.

You can set the transmit level for V.34 (using S39) separately from the transmit level for V.90 (using S59). The default for S59 is 6 (-12dBm). The default for S39 is 7 (-13dBm). The S-register values for S39 (V.34 transmit levels) and S59 (V.90 transmit levels) have not changed.

Value

Definition

0

-6dBm

1

-7dBm

2

-8dBm

3

-9dBm

4

-10dBm

5

-11dBm

6

-12dBm (default for S59 in Cisco MICA Portware Version 2.7.1.3 and higher

7

-13dBm (default for S39 in Cisco MICA Portware Version 2.7.1.3 and higher)

8

-14dBm

9

-15dBm

10

-16dBm

11

-17dBm

12

-18dBm

13

-19dBm

14

-20dBm

15

-21dBm

The following S-register caveats apply to decoupling the V.34 and V.90 power levels:

•The V.34 and V.90 transmit power levels cannot be set hotter than -6dBm.

•The default for V.34 transmit power is S39=7 (-13dBm) for all countries except Japan (-15dBm).

•When the country code for Japan is entered (modem country mica japan), the actual transmit level will always be -15dBm.

•When the USA country code is entered (modem country mica usa), the default V.34 transmit power level is -13dBm (S39=7) and the default V.90 transmit power level is -12dBm (S59=6). Due to FCC restrictions, if a value lower than 6 (-12dBm) for S39 or S59 is selected, the modem reports OK but does not act on the command.

S54 General Capabilities Register—(CSCdp40871)

New values have been added for the S54 general capability register (default S54=136). The values shown below enable power control (CSCdk11008) and allow a 0.5 increment for the SQ value.

Bit 7 in S54 corresponds to a 0.5 increment to the signal quality threshold beginning with Cisco MICA Version 2.7.2.0. This bit is set by default (see the description of S54 above).

This bit value works in conjunction with S32 to set the effective SQ threshold and to determine Cisco MICA receive speed. S32 is set to 2 and S54 bit 7 is set so that the effective SQ threshold is 2.5. The table below illustrates the relationship between the S-register settings, the effective SQ threshold, the trigger Bit Error Rate (BER), and the receive speed for a given signal-noise ratio (SNR)/bandwidth.

S-Register Settings

Effective SQ Threshold

BER Threshold

Receive Rate 3200Hz/33dB

Receive Rate 3429Hz/37dB

•S32=2

•Bit 7 in S54 is clear

2

1:1000

26,400

31,200

•S32=2

•Bit 7 in S54 is set

2.5

1:10^3.5

24,000

28,800

•S32=3

•Bit 7 in S54 is clear

3

1:10,000

21,600

26,400

Note The receive speeds are for illustration only.

Improved Parity Support

Prior to the integration of CSCdj92333, Cisco MICA supported parity over async (non-error-controlled or EC) connections only. Cisco MICA Version 2.7.2.0 supports parity over EC as well as async connections. To use this feature, set bit 6 in S54, set S12 to 7, and set S13 to the desired parity setting from the following list:

• 0 for 7N1

• 1 for 7E1

• 2 for 7O1

For example, to enable 7 databits and even parity for EC and async connections, given the default value of S54 (136), use the &F&D2S12=7S13=1S54=200 modemcap where the following is true.

Value

Definition

&F

Reset to factory defaults

&D2

Do not reset to factory defaults upon trainup failure

S12=7

7 data bits

S13=1

Even parity

S54=200

Bit-mapped register

8

Enable power control (default)

64

Enable parity over EC

128

Enable 0.5 SQ value increment (default)

Client Modems for V.90 Digital Impairment Learning (DIL) Detection

Additional client modems have been added for DIL detection. For V.90 connections, DIL index values can be seen by entering the show modem operational-status x/y command in the Parameter #16 Tx Preemphasis Index:

as2# show modem operational-status 1/7

[ ... ]

Parameter #8 Connected Standard: V.90

Parameter #9 TX,RX Bit Rate: 45333, 28800

Parameter #16 TX,RX Preemphasis Index: 21, 1

In this case, the Tx Preemphasis Index value of 21 signifies that this client is a Conexant ACF. The following table shows additional values displayed in Parameter #16 when the show modem operational-status x/y command is used.

Note The Cisco DialOut Utility (CDU) is no longer supported. Refer to theCisco DialOut Utility End of Sale/Shipping bulletin and the Sample NAS Configurations for Cisco DialOut Utility document for information.

•ITU-T V. 25—Automatic calling or answering equipment on dialup lines. This standard includes the procedures for disabling echo control devices for calls that are established manually and automatically.

Known Problems with Cisco MICA Version 2.7.2.0

This section describes known problems with portware Version 2.7.2.0. If a workaround is not provided, a solution is being developed.

Bugs

•CSCdr24044—Vendor winmodem 5.75 code does not train in V.90 with Cisco MICA.

•CSCdp67281—Cannot make a 12K V.110 connection with vendor TA.

If you have an account with Cisco Connection Online (CCO), you can use Bug Navigator II to find caveats of any severity for any Cisco software release. You can reach Bug Navigator II on CCO at Service & Support: Online Technical Support: Software Bug Toolkit Or at http://www.cisco.com/support/bugtools

For information about Cisco IOS software bugs and features for Cisco IOS release 12.1T, refer to the Release Notes for Cisco AS5300 Universal Access Servers for Cisco IOS Release 12.1 T and the Caveats for Cisco IOS Release 12.1 T.

If you have an account on Cisco Connection Online (CCO), you can use Bug Navigator II to find caveats of any severity for any release.

Downloading Portware Modem Code

Cisco supports portware configuration using service processing element (SPE) configuration commands and modem-pool commands. The spe command allows portware to be downloaded to the SPE. The spe command is available for use with Cisco IOS Software Release12.0(4)XI1, 12.0(5)T, and higher.

The copy xxxxmodem command on the Cisco AS5300 will no longer be available forCisco MICA portware and Cisco 56K Microcom modem firmware download beginning with Cisco IOS Software Release 12.0(4)XI1 and higher. The existing modem portware and firmware configurations in the router will be converted to the SPE format so that functionality is not lost.

For example, the following display shows a Cisco AS5300 SPE download to all modems in Slot 1 (that is, all modems on a feature card containing ten 6-port modem modules). The modem code resides in the Flash memory, and the modem code filename is mica-modem-portware.2.7.2.0.bin.

Note The Cisco DialOut Utility (CDU) is no longer supported. Refer to the Cisco DialOut Utility End of Sale/Shipping bulletin and the Sample NAS Configurations for Cisco DialOut Utility document for information.

Obtaining Documentation

World Wide Web

You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.

Documentation CD-ROM

Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM is updated monthly. Therefore, it is probably more current than printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.

Ordering Documentation

Registered CCO users can order the Documentation CD-ROM and other Cisco Product documentation through our online Subscription Services at http://www.cisco.com/cgi-bin/subcat/kaojump.cgi.

Nonregistered CCO users can order documentation through a local account representative by calling Cisco's corporate headquarters (California, USA) at 408 526-4000 or, in North America, call 800 553-NETS (6387).

Obtaining Technical Assistance

Cisco provides Cisco Connection Online (CCO) as a starting point for all technical assistance. Warranty or maintenance contract customers can use the Technical Assistance Center. All customers can submit technical feedback on Cisco documentation using the web, e-mail, a self-addressed stamped response card included in many printed docs, or by sending mail to Cisco.

Cisco Connection Online

Cisco continues to revolutionize how business is done on the Internet. Cisco Connection Online is the foundation of a suite of interactive, networked services that provides immediate, open access to Cisco information and resources at anytime, from anywhere in the world. This highly integrated Internet application is a powerful, easy-to-use tool for doing business with Cisco.

CCO's broad range of features and services helps customers and partners to streamline business processes and improve productivity. Through CCO, you will find information about Cisco and our networking solutions, services, and programs. In addition, you can resolve technical issues with online support services, download and test software packages, and order Cisco learning materials and merchandise. Valuable online skill assessment, training, and certification programs are also available.

Customers and partners can self-register on CCO to obtain additional personalized information and services. Registered users may order products, check on the status of an order and view benefits specific to their relationships with Cisco.

Technical Assistance Center

The Cisco Technical Assistance Center (TAC) is available to warranty or maintenance contract customers who need technical assistance with a Cisco product that is under warranty or covered by a maintenance contract.

To display the TAC web site that includes links to technical support information and software upgrades and for requesting TAC support, use www.cisco.com/techsupport.

To contact by e-mail, use one of the following:

Language

E-mail Address

English

tac@cisco.com

Hanzi (Chinese)

chinese-tac@cisco.com

Kanji (Japanese)

japan-tac@cisco.com

Hangul (Korean)

korea-tac@cisco.com

Spanish

tac@cisco.com

Thai

thai-tac@cisco.com

In North America, TAC can be reached at 800 553-2447 or 408 526-7209. For other telephone numbers and TAC e-mail addresses worldwide, consult the following web site: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml.

Documentation Feedback

If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.

You can e-mail your comments to bug-doc@cisco.com.

To submit your comments by mail, for your convenience many documents contain a response card behind the front cover. Otherwise, you can mail your comments to the following address: